2563498161 has 27 divisors (see below), whose sum is σ = 4309161753. Its totient is φ = 1464248520.

The previous prime is 2563498151. The next prime is 2563498169. The reversal of 2563498161 is 1618943652.

The square root of 2563498161 is 50631.

It is a perfect power (a square), and thus also a powerful number.

2563498161 is a `hidden beast` number, since 2 + 5 + 634 + 9 + 8 + 1 + 6 + 1 = 666.

It is not a de Polignac number, because 2563498161 - 2⁵ = 2563498129 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (2563498169) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1062046 + ... + 1064456.

Almost surely, 2^2563498161 is an apocalyptic number.

2563498161 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2563498161 is the 50631-st square number.

2563498161 is the 25316-th centered octagonal number.

It is an amenable number.

2563498161 is a deficient number, since it is larger than the sum of its proper divisors (1745663592).

2563498161 is an frugal number, since it uses more digits than its factorization.

2563498161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4842 (or 2421 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The cubic root of 2563498161 is about 1368.6035749037.

The spelling of 2563498161 in words is "two billion, five hundred sixty-three million, four hundred ninety-eight thousand, one hundred sixty-one".